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Robert P. Kirshner is Clowes Professor of Science at Harvard University. Kirshner is an author of over 250 research papers dealing with supernovae and observational cosmology. His work with the "High-Z Supernova Team" on the acceleration of the universe was dubbed the... Read full bio

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Robert P. Kirshner is Clowes Professor of Science at Harvard University. Kirshner is an author of over 250 research papers dealing with supernovae and observational cosmology. His work with the "High-Z Supernova Team" on the acceleration of the universe was dubbed the... Read full bio | Read interview transcript

Dr. David Spergel is an American theoretical astrophysicist and Princeton University professor known for his work on the Wilkinson Microwave Anisotropy Probe (WMAP) mission. Professor Spergel is a MacArthur Fellow. Read full bio | Read interview transcript